Influence of surface treatment on preparing nanosized TiO2 supported on carbon nanotubes

被引：50

作者：

Wang, Shuo ^{[1
]}

Ji, LiJun ^{[1
]}

Wu, Bin ^{[1
]}

Gong, Qianming ^{[1
]}

Zhu, Yuefeng ^{[1
]}

Liang, Ji ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2008年 / 255卷 / 05期

关键词：

Carbon nanotubes; Titanium oxide; Surface treatment; X-ray diffraction;

D O I：

10.1016/j.apsusc.2008.09.031

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, nanosize titanium dioxide (TiO2) deposited on pristine and acid treated carbon nanotubes (CNTs) were prepared by a modified sol-gel method. The nanoscale materials were extensively characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR) and Raman spectra. The results indicated that about 6.8 nm TiO2 nanoparticles were successfully deposited on acid-treated CNTs surface homogeneously and densely, which was smaller than TiO2 coated on pristine CNTs. The surface state of CNTs was a critical factor in obtaining a homogeneous distribution of nanoscale TiO2 particles. Acid oxidization could etch the surface of CNTs and introduce functional groups, which were beneficial to controllable homogeneous deposition. The TiO2 coated on acid-treated CNTs was used as photocatalyst for Reactive Brilliant Red X-3B dye degradation under UV irradiation, which showed higher efficiency than that of TiO2 coated on pristine CNTs and commercial photocatalyst P25. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3263 / 3266

页数：4

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